Jefferson Valley-Yorktown, New York Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Jefferson Valley-Yorktown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Partly Cloudy——80°54°—
- ThursdayJun 4Overcast——84°56°+4°
- FridayJun 5Overcast——83°60°-1°
- SaturdayJun 6Light Drizzle17%—89°62°+6°
- SundayJun 7Light Showers72%0.09″72°56°-17°
- MondayJun 8Overcast38%—77°50°+5°
- TuesdayJun 9Overcast14%—82°51°+5°
Ozone at AQI 37 now. AQI up 9 over the last 6 hours (gradual rise). With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 by mid-afternoon.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 37 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 by mid-afternoon.
- Present
- AQI 37
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 5.6 µg/m³ (AQI 31) with a 0.95 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:27 AM
- Moonset
- 12:50 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Jefferson Valley-Yorktown at a glance
- Today vs. normal: 75°F — typical for the season
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.